Gas burner



Sept. 17, 1935. Y H. R. PALMER GAS BURNER Filed Feb. 6, 1954 taken inconnection drawing, in which:

Patented Sept. 17, 1935 UNITED STATES PAENTT OFFICE GAS BURNER HerbertPalmer, Shaker Village, Ohio, assignor of one-half to Thomas H. Tubman,Akron,

Ohio

Application February e, 1934, Serial No. 710,024

9Claims. (c1.15s 117) This invention relating to improvements in gasburners and more particularly such burners adapted for .use with cookingstoves, will be readily understood from the following description, withthe accompanying Figure '1 is "a plan view of the improved burner;

Figure 2 is a longitudinal sectional view on the line 22 of Figure 1;.

Figure 3 is a section on the line 3-3 of Figure 2; and r Figure 4-is alongitudinal sectional view through the air shutter shown detached fromthe burner.

Referring more particularly to the drawing 5 denotes the burner,comprising the usual mixing tube 6 to the outer end of which gas issupplied from a manifold not shown, connected in any suitable mannerwith the opening 1, in cap 3.

An adjustable shutter 9 formed of thin resilient metal; and snuglysleeved upon the mixing tube regulates the flow of air drawn intothetube ii, through side openings Ill, by the infiowing gas.

The opposite ends of theshutter 9 are bent inwardly and slitted as at I!to form tongues l2 adapted to resiliently grip the mixing tube and holdthe shutter in any desired adjusted position.

I The shutter can be slid longitudinally or it can be rotated to bringthe slots l l into or out of register with the side air openings Ill,thus permitting very fine adjustment. However, the frictional engagementof the tongues [2 with the mixing tube precludes accidental movement ofthe shutter. By locating the air openings in the sides of the tube,instead of in the cap 8 as usual, the air is drawn in from all sideswith a very desirable swirling action. The inner wall of the mixing tubeis gradually contracted and then expanded just in advance of the airopenings In, as at l3, thus insuring a 'Venturi-like action. 7

Theinner end of the mixing tube" is enlarged at i'ts'outer end into asubstantially bowl shaped burner portion I4. comprising an integralupstanding' tube or inner wall l5 concentrically'disposed with respectto and spaced from the outer wall I 5 thereof, the annular space betweenthe 'two walls'con'stituting a distributing chamber ll. The opening orpassage l8 through the tube '!5 insures an ample supply of secondaryair. The outer-wall lfi'of the burner is fluted to increase the flamearea and intensity ofrthe flame without a corresponding increase ingas'consiunption.

The distributing chamber I l is partiallyrclosed at its upper end by aburner head or plate l9 which is supported in slightly spaced relationto'and directly above the top edges of the walls I5 and It by means ofthreaded bolts fixedly mounted in bosses 2! formed in the bowl shapedburner portion I 4. Plate I9 is provided with a round centrally disposedaperture 22 which coincides in size and registerswith the opening 18,

and the outer end of the plate is corrugated or fluted to correspond toand register with the corrugations in the outer wall H6, or in otherwords the peripheral edge of plate I9 is substantially flush with theouter face of wall it, when the parts are assembled. An unobstructedcircular inner flame outlet or opening 23 and an unobstructed outerirregular flame outlet or opening 2d is thus provided. A bafile member25 located in the air opening or passage [8, and preferably supportedfrom plate l9 by means of arms 26, prevents a too free flow of air tothe flame openings.

The action of the flames is as follows: the

inner ring like flame issuing from the inner ring shaped slot 23 betweenthe top of the inner wall 15 of burner M and the inner edge of 1 axiallyperforated plate is heats the central area ofa cooking utensil supportedin proper distance from the burner, and the outerflame issuing from theirregular slot 24 between the top of the outer wall to and the outeredge of plate l9 heats the substantially ring shaped area of saidutensil adjacent to said central area. The inner flame is of uniformcharacter throughout, however, due to the irregular'configuration of theouter wall l5 in'cooperation with the inner tubular wall I5 of theburner, the flame issuing through the outer burner passage 24 varies inintensity at the irregularly shapedpassage 24 in partly opposing o1converging directions with respect to adjacent areas. The intensity ofthe flame is greatly increased at these converging points and it hasbeen found'that a maximum of heating efliciency can thus be obtainedwith a minimum consumption of fuel. According to this arrangement andconstruction of parts it is also possible to obtain an exceptionallylarge flame area with 'a very small burner.

The bolts 20 project upwardly through openings 2'! in the plate l9, andthe latter is adjustably supported on the bolts by means of nuts 28'threadedly mounted on their threaded outer ends, the plate beingprovided with upwardly and inwardly extending fingers 29 engaging thetop of the nuts. It will thus be seen that the plate can be convenientlyelevated or lowered and the size of opening 24 increased or decreased bymerely turning the nuts 28 in an appropriate direction. The nuts 28 areprovided with integral caps or heads 30 which prevent grease and otherforeign matter from reaching the threads of the nuts or bolts. Theseheads are preferably slotted to permit use of a screw driver or the likein turning the nuts.

A downwardly and outwardly inclined annular apron-like member 3| formedwith a large central opening 32, encircles the wall I 6 in slightlyspaced relation thereto and slightly below the top thereof and keeps thecold air from the burner. The member 3| is supported from the plate H!by means of arms 33.

While my improved burner is particularly adapted for use with cookingstoves, it will be understood that it can also be used in furnaces andhot Water heaters.

Having thus described my invention:

What I claim is:

l. A gas burner comprising a body having an opening and a substantiallyring shaped mixing chamber open at its top, the inner cylindrical wallof said chamber forming an open ended passage having its upper open endhorizontally aligned with the open top of said chamber and the outerwall of said chamber being fluted to provide an outlet opening ofvarying area at the top of said chamber, a plate shaped to fit the opentop of said chamber adjustably mounted slightly above the open top ofsaid body to provide substantially concentric outlet passages from saidchamber to the open atmosphere, and means adapted to shift said platevertically with respect to said body for varying the width of saidoutlet passages.

2. A gas burner comprising a body having an open-top and a substantiallyring-shaped mixing chamber having the tops of its walls horizontallyaligned, the inner cylindrical wall of said chamber forming an openended passage and the outer wall of said chamber being fluted to providean outlet opening of varying area at the top of said chamber, a flatcentrally perforated plate shaped to fit and close the open top of saidchamber adjustably mounted slightly above the open top of said body toprovide substantially concentric outlet passages from said chamber tothe open atmosphere, means adapted to shift said plate vertically withrespect to said body for varying the width of said concentric outletpassages and means within said open ended passage and supported by saidplate to partly obstruct a flow of air through said open ended passage.

3. A gas burner comprising a body having an open-top and a substantiallyring-shaped mixing chamber having the tops of its walls arranged in thesame horizontal plane, the inner wall of said chamber being cylindricaland the outer wall of said chamber being fluted to provide an outletopening of varying area at the top of said chamber, a flat axiallyperforated plate having the same irregular configuration as said outletopening mounted slightly above the open top of said body to provide twosubstantially concentric, narrow outlet passages for the gas and airmixture in said mixing chamber, and means adapted to shift said platevertically with respect to said body for varying the width of said twooutlet passages. I r

4. A gas burner comprising a bowl shaped body having an open top, afluted outer wall and a cylindrical inner wall having its tophorizontally aligned with said outer wall and being axially aligned withand spaced from said outer wall to provide a substantially ring-shapedmixing chamber enclosing an axial passage through said body, a flataxially perforated plate having the irregular configuration of saidchamber and mounted slightly above the open top thereof in alignmentwith the outer and inner walls to 10 provide two substantiallyconcentric narrow outlet passages for the gas and air mixture in saidmixing chamber, and means extended through said mixing chamber adaptedto shift said plate vertically with respect to said body for varying thewidth of said two outlet passages.

5. A gas burner comprising a bowl shaped body having an open top, afluted outer wall and a cylindrical inner wall having their topshorizontally aligned with each other, said inner wall being axiallyaligned with and spaced from said outer wall to provide a substantiallyringshaped mixing chamber enclosing an axial passage through said body,and a flat axially periorated plate having the irregular configurationof said chamber and mounted slightly above the open top thereof inalignment with the inner and outer walls to provide two substantiallyconcentric narrow outlet passages of equal width adjacent the inner andouter walls of said chamher.

6. A gas burner as described in claim 4, wherein said adjusting meansfor said disk include a plurality of symmetrically arranged threaded :5posts, and rotatable means threadedly connected with the upper ends ofsaid posts and wherein said plate is provided with means for couplingsaid plate with said rotatable means.

'7. In a gas burner embodying a burner body a; and a burner manifold, aventuri within said manifold, air openings circumferentially arranged inthe wall of said manifold adjacent to said venturi and a sleeve membermounted on said manifold for longitudinal and rotatable movement, saidmember having slitted, yielding end portions yieldingly engaged withsaid manifold to hold said sleeve in its adjusted position.

8. A gas burner comprising a substantially bowl shaped body having anopen top and a substantially ring shaped mixing chamber having the topsof its walls arranged in the same horizontal plane, a flat axiallyperforated plate having the configuration of said mixing chamber mountedslightly above the open top of said body to provide substantiallyconcentric narrow inner and outer unobstructed outlet passages for thegas and air mixture discharged from said mixing chamber, and means foradjusting said plate to increase or decrease the capacity of saidpassages.

9. A gas burner as described in claim 4, wherein said means extendedthrough said mixing chamber consists of a plurality of symmetricallyarranged threaded posts and nuts threadedly connected with the upperends of said posts and wherein said plate is provided with means forcoupling said plate with said nuts and said nuts include caps to protectthe threads of the nuts and posts.

HERBERT R. PALMER.

